Optimization of the output characteristics of mixed holograms in the $({\bar{1}\bar{1}0})$-cut BTO photorefractive piezocrystal

The results of theoretical research of the optimization process of readout mixed transmission holograms formed in the $({\bar{1}\bar{1}0})$-cut $\mathrm{Bi_{12}TiO_{20}}$ photorefractive piezoelectric crystal are presented. It is shown that in comparison with the case of pure phase holograms, traditionally regarded in photorefractive crystals, additional accounting of the amplitude component of the holographic grating leads to a qualitative and quantitative changes in the orientation dependence of the polarization-optimized values of the diffraction efficiency of holograms recorded in this crystal.